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7.Profit and Loss
medium
A cycle dealer offers a discount of $10 \%$ and still makes a profit of $26 \% .$ What does he pay for a cycle whose marked price is $Rs.\,840$? (in $Rs.$)
A
$600$
B
$650$
C
$700$
D
$750$
Solution
Let, the $C.P.$ of cycle be $₹ x$
Now, according to the question,
$840 \times \frac{90}{100}=\frac{x \times 126}{100}$
$\Rightarrow \quad x \times 126=840 \times 90$
$\Rightarrow \quad x=\frac{840 \times 90}{126}=Rs. 600$
Standard 13
Quantitative Aptitude